34
Connector Type: one XLR-3M and XLR-3F pair,
wired in parallel, for each channel.
Pin 1 - Common
Pin 2 - +24VDC input
Pin 3 - Intercom audio high
PA Output
Output Level
235mV
RMS
Connector Type: 1/8-inch Stereo Phone Jack
Tip - PA output high
Ring - Not used
Sleeve - Common
Speaker Output
Output Level:
0dB nominal (1.0 V
RMS)
Output Impedance:
1000 Ohms nominal
Frequency Response:
200Hz to 8kHz +1/-3dB
Connector Type: RCA Phono Jack
Tip: Speaker output high
Sleeve: Common
Expansion Input/Output
Type: 2.0mm stereo phone jack
Tip: Talk output
Ring: Listen input
Sleeve: Common
External Power
Type: 2.0mm power jack
Internal pin: positive (+)
External shell: negative (-)
Headphone Amplifier
Voltage Gain:
30 ±3dB
Maximum Output:
250 mW ±10% into 150 Ohms, 65mW ±10% into
600 Ohms
Frequency Response:
200Hz to 8kHz +1/-3dB
Incoming Call Beep Tone:
2kHz, at the headphones
Total Harmonic Distortion:
Less than 0.2% at 200mW
Sidetone:
18 ±2dB, adjustable
Panel Microphone Amplifier
Voltage Gains:
Mic to CHN; 25 ±3dB, before limiting
Mic to Headphone; adjustable, 45dB ±10%
maximum, into 150 Ohms
Mic to PA; 15 ±3dB, 235mV
RMS ±10%
Frequency Response:
200Hz to 8kHz +1/-3dB
Total Harmonic Distortion:
Less than 0.2% at CHN output
VOX Range
-75 to -30dB, -60dB factory set
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